Rhizomelic chondrodysplasia punctata
diseaseOn this page
Also known as RCDPrhizomelic chondrodysplasia punctata syndromerhizomelic dwarfism
Summary
Rhizomelic chondrodysplasia punctata (MONDO:0015776) is a disease with 4 cohort genes and 2 clinical trials. The dominant Reactome pathway is Peroxisomal protein import (4 cohort genes). Top therapeutic interventions include ppi-1011.
At a glance
- Prevalence: Unknown (Worldwide) [Orphanet-validated]
- Cohort genes: 4
- ClinVar variants: 130
- Phenotypes (HPO): 20
- Clinical trials: 2
Clinical features
Epidemiology
Prevalence records
2 prevalence record(s), Orphanet:
| Type | Class | Value | Geography | Validation |
|---|---|---|---|---|
| Prevalence at birth | 1-9 / 1 000 000 | 0.7 | Europe | Validated |
| Prevalence at birth | 1-9 / 1 000 000 | 0.5 | United States | Validated |
Signs & symptoms
Clinical features (HPO)
20 HPO clinical features (Orphanet curated; top 20 by frequency):
| HPO ID | Term | Frequency |
|---|---|---|
| HP:0000164 | Abnormality of the dentition | Very frequent (80-99%) |
| HP:0000252 | Microcephaly | Very frequent (80-99%) |
| HP:0000286 | Epicanthus | Very frequent (80-99%) |
| HP:0000518 | Cataract | Very frequent (80-99%) |
| HP:0000944 | Abnormal metaphysis morphology | Very frequent (80-99%) |
| HP:0000958 | Dry skin | Very frequent (80-99%) |
| HP:0001510 | Growth delay | Very frequent (80-99%) |
| HP:0002231 | Sparse body hair | Very frequent (80-99%) |
| HP:0002650 | Scoliosis | Very frequent (80-99%) |
| HP:0004322 | Short stature | Very frequent (80-99%) |
| HP:0005930 | Abnormality of epiphysis morphology | Very frequent (80-99%) |
| HP:0008064 | Ichthyosis | Very frequent (80-99%) |
| HP:0008905 | Rhizomelia | Very frequent (80-99%) |
| HP:0009826 | Limb undergrowth | Very frequent (80-99%) |
| HP:0010655 | Epiphyseal stippling | Very frequent (80-99%) |
| HP:0001376 | Limitation of joint mobility | Frequent (30-79%) |
| HP:0003298 | Spina bifida occulta | Frequent (30-79%) |
| HP:0012368 | Flat face | Frequent (30-79%) |
| HP:0001596 | Alopecia | Occasional (5-29%) |
| HP:0010864 | Intellectual disability, severe | Occasional (5-29%) |
Identifiers
Disease identifiers
| Field | Value |
|---|---|
| Canonical name | rhizomelic chondrodysplasia punctata |
| Mondo ID | MONDO:0015776 |
| MeSH | D018902 |
| OMIM | 215100 |
| Orphanet | 177 |
| DOID | DOID:2580 |
| ICD-10-CM | E71.540 |
| ICD-11 | 260357080 |
| NCIT | C85047 |
| SNOMED CT | 56692003 |
| UMLS | C0282529 |
| MedGen | 79471 |
| GARD | 0013160 |
| Is cancer (heuristic) | no |
Also known as: RCDP · rhizomelic chondrodysplasia punctata · rhizomelic chondrodysplasia punctata syndrome · rhizomelic dwarfism
Data availability: 130 ClinVar variants · 12 cell lines.
Disease family
An umbrella term covering 4 Mondo subtypes.
Classification path: disease › human disease › disease by body system or component › disorder of orbital region › eye disorder › rhizomelic chondrodysplasia punctata
Related subtypes (119): ptosis, eye accommodation disease, corneal disorder, asthenopia, lens disorder, keratomalacia, scleral disorder, ocular siderosis, coloboma, luxation of globe, mucopolysaccharidosis type 1, lacrimal apparatus disorder, Foster-Kennedy syndrome, anterior dislocation of lens, uveal disorder, eyelid disorder, ocular hypotension, scotoma, exophthalmos, ophthalmia nodosa, eye degenerative disorder, refractive error, glaucoma, retinal disorder, eye allergy, ocular vascular disorder, optic neuritis, conjunctival disorder, ocular hypertension, Tietz syndrome, Alagille syndrome, glaucoma-sleep apnea syndrome, Marshall syndrome, microcornea-glaucoma-absent frontal sinuses syndrome, nail-patella syndrome, oculodentodigital dysplasia, piebaldism, Sturge-Weber syndrome, cerebrotendinous xanthomatosis, ocular cystinosis, alpha-mannosidosis, megalocornea-intellectual disability syndrome, mucolipidosis type IV, mucopolysaccharidosis type 6, Netherton syndrome, galactosialidosis, Niemann-Pick disease type A, ocular motor apraxia, Cogan type, Peters plus syndrome, isolated Pierre-Robin syndrome, ectodermal dysplasia-blindness syndrome, Sandhoff disease, SHORT syndrome, Sjogren-Larsson syndrome, Smith-Lemli-Opitz syndrome, Tay-Sachs disease, tyrosinemia type II, Ito hypomelanosis, X-linked cone dysfunction syndrome with myopia, red color blindness, oculocerebrorenal syndrome, Lowry-MacLean syndrome, pigment dispersion syndrome, hereditary hyperferritinemia with congenital cataracts, dyssegmental dysplasia-glaucoma syndrome, mevalonic aciduria, familial cavitary optic disk anomaly, blindness - scoliosis - arachnodactyly syndrome, fatty acyl-CoA reductase 1 deficiency, microcephaly-intellectual disability-sensorineural hearing loss-epilepsy-abnormal muscle tone syndrome, neurotrophic keratopathy, Cogan syndrome, atopic keratoconjunctivitis, Ehlers-Danlos syndrome, kyphoscoliotic type 1, IRVAN syndrome, Rothmund-Thomson syndrome type 2, microcornea-corectopia-macular hypoplasia syndrome, isolated anophthalmia-microphthalmia syndrome, Spasmus nutans, toxic maculopathy due to antimalarial drugs, syndromic recessive X-linked ichthyosis, acute zonal occult outer retinopathy, acute annular outer retinopathy, phakomatosis pigmentovascularis, lamellar ichthyosis, idiopathic linear interstitial keratitis, chondroectodermal dysplasia with night blindness, galactosemia, GM1 gangliosidosis, Gaucher disease, visual snow syndrome, extensive peripapillary myelinated nerve fibers, IgG4-related ophthalmic disorder, global developmental delay-visual anomalies-progressive cerebellar atrophy-truncal hypotonia syndrome, vernal keratoconjunctivitis, Gardner syndrome, anterior segment dysgenesis, isolated ankyloblepharon filiforme adnatum, hereditary optic neuropathy, essential strabismus, Axenfeld anomaly, eye neoplasm, isolated blepharochalasis, punctate inner choroidopathy, eye infectious disorder, vitreous body disorder, 9q33.3q34.11 microdeletion syndrome, autoimmune/inflammatory optic neuropathy, LTBP2-related ocular dysgenesis, ocular growth disorder, ocular dysgenesis caused by defects in PAX6 regulation, choroidal neovascularization, anterior segment developmental abnormality with extraocular manifestations, congenital optic disk excavation, neuroocular syndrome, isolated angioid streaks, multiple evanescent white dot syndrome, stellate multiform amelanotic choroidopathy, macular telangiectasia
Subtypes (4): rhizomelic chondrodysplasia punctata type 1, rhizomelic chondrodysplasia punctata type 2, rhizomelic chondrodysplasia punctata type 3, peroxisome biogenesis disorder due to PEX5 defect in the PEX7-binding domain
Genetics & variants
GWAS landscape
No GWAS associations recorded — common-variant (GWAS) studies don’t cover this disease (typical for Mendelian / rare diseases). See the curated gene cohort and Mendelian overlap below.
Variant details and genetic-evidence tiers
ClinVar germline variants
130 retrieved; paginated sample, class counts are floors:
49 uncertain significance, 17 pathogenic/likely pathogenic, 17 likely benign, 17 likely pathogenic, 13 pathogenic, 7 benign, 6 conflicting classifications of pathogenicity, 4 benign/likely benign
| ClinVar | Variant (HGVS) | Gene | Classification | Review |
|---|---|---|---|---|
| 3366567 | NC_000002.11:g.(178362494_178364345)_(178372760_178378546)del | AGPS | Pathogenic | criteria provided, single submitter |
| 1073464 | NM_014236.4(GNPAT):c.1583_1586del (p.Leu528fs) | GNPAT | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 190410 | NM_001351132.2(PEX5):c.677dup (p.Val227fs) | PEX5 | Pathogenic | criteria provided, single submitter |
| 1075998 | NM_000288.4(PEX7):c.474_477del (p.Tyr159fs) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 1339708 | NM_000288.4(PEX7):c.376C>T (p.Gln126Ter) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 1421713 | NM_000288.4(PEX7):c.517del (p.Ser173fs) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 1449189 | NM_000288.4(PEX7):c.488G>A (p.Trp163Ter) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 1486959 | NM_000288.4(PEX7):c.804-2A>C | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 188711 | NM_000288.4(PEX7):c.400G>A (p.Asp134Asn) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 188975 | NM_000288.4(PEX7):c.188+1G>C | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 189076 | NM_000288.4(PEX7):c.618G>A (p.Trp206Ter) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 1926974 | NM_000288.4(PEX7):c.858_867del (p.Glu287fs) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 225436 | NM_000288.4(PEX7):c.183del (p.Phe61fs) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 3619127 | NM_000288.4(PEX7):c.678G>A (p.Trp226Ter) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 370629 | NM_000288.4(PEX7):c.13_19dup (p.Gly7fs) | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 370682 | NM_000288.4(PEX7):c.277C>T (p.Gln93Ter) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 4059703 | NM_000288.4(PEX7):c.903+2T>G | PEX7 | Pathogenic | criteria provided, single submitter |
| 4818131 | NM_000288.4(PEX7):c.804-2A>G | PEX7 | Pathogenic | criteria provided, single submitter |
| 4818134 | NM_000288.4(PEX7):c.901_903+3delinsAG | PEX7 | Pathogenic | criteria provided, single submitter |
| 554785 | NM_000288.4(PEX7):c.429del (p.Val144fs) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 639671 | NM_000288.4(PEX7):c.130+1G>A | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 7780 | NM_000288.4(PEX7):c.875T>A (p.Leu292Ter) | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 7781 | NM_000288.4(PEX7):c.653C>T (p.Ala218Val) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 7782 | NM_000288.4(PEX7):c.649G>A (p.Gly217Arg) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 7783 | NM_000288.4(PEX7):c.694C>T (p.Arg232Ter) | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 7785 | NM_000288.4(PEX7):c.903+1G>C | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 7786 | NM_000288.4(PEX7):c.345T>G (p.Tyr115Ter) | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 7788 | NM_000288.4(PEX7):c.120C>G (p.Tyr40Ter) | PEX7 | Pathogenic | criteria provided, multiple submitters, no conflicts |
| 7790 | NM_000288.4(PEX7):c.40A>C (p.Thr14Pro) | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
| 813363 | NM_000288.4(PEX7):c.188+1G>A | PEX7 | Pathogenic/Likely pathogenic | criteria provided, multiple submitters, no conflicts |
Genes & proteins
Mendelian disease overlap and somatic drivers
GenCC: 0 · Orphanet: 8 · OMIM-shared: 0 · Dual-evidence (GWAS+Mendelian): 0
Orphanet rare-disease linkage (cohort genes)
| Gene | Orphanet ID | Rare disease |
|---|---|---|
| AGPS | Orphanet:309803 | Rhizomelic chondrodysplasia punctata type 3 |
| GNPAT | Orphanet:309796 | Rhizomelic chondrodysplasia punctata type 2 |
| PEX7 | Orphanet:309789 | Rhizomelic chondrodysplasia punctata type 1 |
| PEX7 | Orphanet:773 | Adult Refsum disease |
| PEX5 | Orphanet:44 | Neonatal adrenoleukodystrophy |
| PEX5 | Orphanet:468717 | Rhizomelic chondrodysplasia punctata type 5 |
| PEX5 | Orphanet:772 | Infantile Refsum disease |
| PEX5 | Orphanet:912 | Zellweger syndrome |
Cohort genes → proteins
4 cohort genes, 4 distinct canonical proteins.
Evidence partition
| Subset | Genes |
|---|---|
| multi_evidence | 4 |
Cohort genes (full)
| Symbol | HGNC | Ensembl | UniProt | Name | Evidence |
|---|---|---|---|---|---|
| AGPS | HGNC:327 | ENSG00000018510 | O00116 | Alkyldihydroxyacetonephosphate synthase, peroxisomal | clinvar |
| GNPAT | HGNC:4416 | ENSG00000116906 | O15228 | Dihydroxyacetone phosphate acyltransferase | clinvar |
| PEX7 | HGNC:8860 | ENSG00000112357 | O00628 | Peroxisomal targeting signal 2 receptor | clinvar |
| PEX5 | HGNC:9719 | ENSG00000139197 | P50542 | Peroxisomal targeting signal 1 receptor | clinvar |
Cohort function summary
Lead sentence per gene, UniProt-curated.
| Symbol | Protein name | Function (lead sentence) |
|---|---|---|
| AGPS | Alkyldihydroxyacetonephosphate synthase, peroxisomal | Catalyzes the exchange of the acyl chain in acyl-dihydroxyacetonephosphate (acyl-DHAP) for a long chain fatty alcohol, yielding the first ether linked intermediate, i.e. alkyl-dihydroxyacetonephosphate (alkyl-DHAP), in the pathway of ether… |
| GNPAT | Dihydroxyacetone phosphate acyltransferase | Dihydroxyacetonephosphate acyltransferase catalyzing the first step in the biosynthesis of plasmalogens, a subset of phospholipids that differ from other glycerolipids by having an alkyl chain attached through a vinyl ether linkage at the… |
| PEX7 | Peroxisomal targeting signal 2 receptor | Receptor required for the peroxisomal import of proteins containing a C-terminal PTS2-type peroxisomal targeting signal. |
| PEX5 | Peroxisomal targeting signal 1 receptor | Receptor that mediates peroxisomal import of proteins containing a C-terminal PTS1-type tripeptide peroxisomal targeting signal (SKL-type). |
Protein-family classification
Druggable: 2 · Difficult: 1 · Unknown: 1 · Druggable fraction: 0.5
Family distribution
Cohort families vs a genome-wide background (hypergeometric, BH-FDR; fold = observed/expected). Counts kept; sorted by enrichment, so the catch-all Other/Unknown bucket no longer leads.
| Family | Genes | Fold | FDR |
|---|---|---|---|
| Enzyme (other) | 2 | 6.0× | 0.112 |
| Scaffold/PPI | 1 | 4.3× | 0.318 |
| Other/Unknown | 1 | 0.5× | 0.962 |
Per-gene assignment
| Symbol | Family | Druggable? | EC | InterPro (top 3) |
|---|---|---|---|---|
| AGPS | Enzyme (other) | yes | 2.5.1.26 | FAD-bd_oxidored_4_C, Oxid_FAD_bind_N, FAD-linked_Oxase-like_C |
| GNPAT | Enzyme (other) | yes | 2.3.1.42 | Plipid/glycerol_acylTrfase, GPAT/DHAPAT, DHAPAT |
| PEX7 | Scaffold/PPI | no | WD40_rpt, WD40/YVTN_repeat-like_dom_sf, WD40_repeat_CS | |
| PEX5 | Other/Unknown | no | TPR-like_helical_dom_sf, TPR_rpt, PEX5/PEX5L |
Expression context
Cohort genes with no expression data: 0.
4 cohort genes are a single-cell marker in ≥1 SCXA experiment.
Breadth distribution (Bgee present_calls)
| Bucket | Genes |
|---|---|
| narrow (1-5 tissues) | 0 |
| moderate (6-20) | 0 |
| broad (>20) | 4 |
| unknown | 0 |
Top tissues across cohort
| Tissue | Cohort genes |
|---|---|
| sperm | 2 |
| calcaneal tendon | 1 |
| tendon | 1 |
| biceps brachii | 1 |
| gluteal muscle | 1 |
| skeletal muscle tissue of biceps brachii | 1 |
| esophagus squamous epithelium | 1 |
| pigmented layer of retina | 1 |
| gastrocnemius | 1 |
| left testis | 1 |
| right testis | 1 |
Per-gene tissue summary (top 30)
| Symbol | Bgee breadth | FANTOM5 breadth | SCXA | Top tissues |
|---|---|---|---|---|
| AGPS | 278 | ubiquitous | marker | sperm, calcaneal tendon, tendon |
| GNPAT | 294 | ubiquitous | marker | gluteal muscle, biceps brachii, skeletal muscle tissue of biceps brachii |
| PEX7 | 276 | ubiquitous | marker | pigmented layer of retina, sperm, esophagus squamous epithelium |
| PEX5 | 142 | ubiquitous | marker | gastrocnemius, left testis, right testis |
Protein interactions among cohort
Intra-cohort edges: 5.
Hub genes (top 10 by interactor count)
| Symbol | Interactor count |
|---|---|
| AGPS | 2,656 |
| PEX5 | 1,741 |
| GNPAT | 1,641 |
| PEX7 | 1,356 |
Intra-cohort edges
| A | B | Sources |
|---|---|---|
| AGPS | GNPAT | string_interaction |
| AGPS | PEX5 | string_interaction |
| AGPS | PEX7 | string_interaction |
| GNPAT | PEX7 | string_interaction |
| PEX5 | PEX7 | intact, string_interaction |
Structural data
PDB: 1 · AlphaFold-only: 3 · No structure: 0
Cohort genes with PDB structures (top 30)
| Symbol | UniProt | PDB entries |
|---|---|---|
| PEX5 | P50542 | 11 |
AlphaFold-only cohort genes (top 30 by pLDDT)
| Symbol | UniProt | pLDDT |
|---|---|---|
| PEX7 | O00628 | 95.54 |
| AGPS | O00116 | 89.27 |
| GNPAT | O15228 | 88.96 |
Function
Pathway analysis
Distinct Reactome pathways touched by cohort: 10. Enrichment computed across 4 evidence-associated genes (4 with Reactome annotation).
Pathways by enrichment
Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 4 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.
| Pathway | Cohort genes | Fold | FDR | Sample cohort genes |
|---|---|---|---|---|
| Peroxisomal protein import | 4 | 173.0× | 1e-08 | AGPS, GNPAT, PEX7, PEX5 |
| Plasmalogen biosynthesis | 2 | 1903.3× | 1e-06 | AGPS, GNPAT |
| Wax and plasmalogen biosynthesis | 1 | 951.7× | 0.004 | AGPS |
| TYSND1 cleaves peroxisomal proteins | 1 | 356.9× | 0.007 | AGPS |
| Pexophagy | 1 | 237.9× | 0.008 | PEX5 |
| Synthesis of PA | 1 | 73.2× | 0.023 | GNPAT |
| E3 ubiquitin ligases ubiquitinate target proteins | 1 | 48.4× | 0.026 | PEX5 |
| Protein localization | 1 | 47.6× | 0.026 | AGPS |
| Metabolism of lipids | 1 | 7.9× | 0.134 | AGPS |
| Metabolism | 1 | 2.9× | 0.302 | AGPS |
GO biological processes by enrichment
Over-representation of cohort genes vs the genome-wide background (hypergeometric test, Benjamini-Hochberg FDR; fold = observed/expected over 4 annotated cohort genes). Counts and members are kept as ground-truth; sorted by enrichment.
| GO term | Cohort genes | Fold | FDR | Sample cohort genes |
|---|---|---|---|---|
| ether lipid biosynthetic process | 3 | 1404.3× | 1e-08 | AGPS, GNPAT, PEX7 |
| protein targeting to peroxisome | 2 | 842.6× | 3e-05 | PEX7, PEX5 |
| protein import into peroxisome matrix | 2 | 702.2× | 3e-05 | PEX7, PEX5 |
| fatty acid beta-oxidation | 2 | 187.2× | 3e-04 | PEX7, PEX5 |
| neuron migration | 2 | 66.9× | 0.002 | PEX7, PEX5 |
| cerebellum morphogenesis | 1 | 1404.3× | 0.004 | GNPAT |
| protein import into peroxisome matrix, docking | 1 | 1053.2× | 0.004 | PEX5 |
| protein import into peroxisome matrix, translocation | 1 | 1053.2× | 0.004 | PEX5 |
| protein import into peroxisome matrix, substrate release | 1 | 842.6× | 0.004 | PEX5 |
| paranodal junction assembly | 1 | 702.2× | 0.004 | GNPAT |
| protein import into peroxisome membrane | 1 | 702.2× | 0.004 | PEX5 |
| mitochondrial membrane organization | 1 | 601.9× | 0.004 | PEX5 |
| protein import into peroxisome matrix, receptor recycling | 1 | 601.9× | 0.004 | PEX5 |
| cerebral cortex cell migration | 1 | 383.0× | 0.006 | PEX5 |
| cerebral cortex neuron differentiation | 1 | 300.9× | 0.007 | PEX5 |
| pexophagy | 1 | 263.3× | 0.007 | PEX5 |
| lipid biosynthetic process | 1 | 247.8× | 0.007 | AGPS |
| cell development | 1 | 221.7× | 0.008 | PEX5 |
| peroxisome organization | 1 | 200.6× | 0.008 | PEX7 |
| very long-chain fatty acid metabolic process | 1 | 191.5× | 0.008 | PEX5 |
| protein tetramerization | 1 | 156.0× | 0.009 | PEX5 |
| endochondral ossification | 1 | 135.9× | 0.009 | PEX7 |
| neuromuscular process | 1 | 131.7× | 0.009 | PEX5 |
| phosphatidic acid biosynthetic process | 1 | 127.7× | 0.009 | GNPAT |
| membrane organization | 1 | 127.7× | 0.009 | GNPAT |
| positive regulation of multicellular organism growth | 1 | 123.9× | 0.009 | PEX5 |
| negative regulation of protein-containing complex assembly | 1 | 113.9× | 0.010 | PEX5 |
| endoplasmic reticulum organization | 1 | 105.3× | 0.010 | PEX5 |
| cellular response to reactive oxygen species | 1 | 102.8× | 0.010 | PEX5 |
| synapse assembly | 1 | 57.7× | 0.017 | GNPAT |
Therapeutics
Drug target analysis
Approved (phase 4): 0 · Phase ≥3: 0 · Phased (≥1): 0 · Undrugged: 4
Druggability breadth: 2 of 4 evidence-associated genes (50%) have a ChEMBL target (buckets above are over the deeply-mined display cohort).
Top cohort targets by molecule count
| Symbol | Molecules | Max phase |
|---|---|---|
| AGPS | 0 | 0 |
| GNPAT | 0 | 0 |
| PEX7 | 0 | 0 |
| PEX5 | 0 | 0 |
Bioactivity and enzyme data
Enzyme cohort genes (≥1 EC): 2.
Cohort genes with ChEMBL bioactivity (full, sorted by assay count)
| Symbol | Assays | Type breakdown |
|---|---|---|
| GNPAT | 14 | Functional:8, Binding:6 |
| AGPS | 5 | Binding:5 |
Cohort enzymes (BRENDA EC)
| Symbol | EC numbers | Names |
|---|---|---|
| AGPS | 2.5.1.26 | alkylglycerone-phosphate synthase |
| GNPAT | 2.3.1.42 | glycerone-phosphate O-acyltransferase |
Pharmacogenomics
Cohort genes with a PharmGKB record: 4; with CPIC/DPWG dosing guidelines: 0.
No cohort gene has a CPIC/DPWG genotype-guided dosing guideline (PharmGKB).
Chemical tractability of cohort targets
0 approved/phased compounds have measured bioactivity against a cohort gene (and aren’t yet in disease-level trials). This is a research / tractability signal, NOT a therapeutic recommendation — a bioactivity row often reflects off-target or screening binding (e.g. promiscuous kinase inhibitors against a cohort kinase), implying no disease mechanism.
Druggability pyramid
Cohort genes binned by druggability tier (high → low):
| Tier | Definition | Genes | Symbols |
|---|---|---|---|
| A | Approved (phase 4 drug) | 0 | |
| B | Phased (≥1) drug, not yet approved | 0 | |
| C | Druggable family + PDB, no drug | 0 | |
| D | Druggable family + AlphaFold only, no drug | 2 | AGPS, GNPAT |
| E | Difficult family or no structure, no drug | 2 | PEX7, PEX5 |
Undrugged target profiles
4 cohort genes are undrugged. Ranked by ‘starting-point quality’ (assay depth + drugged-partner adjacency).
| Symbol | ChEMBL assays | Drugged partners (top 3) |
|---|---|---|
| AGPS | 5 | — |
| GNPAT | 14 | — |
| PEX7 | 0 | — |
| PEX5 | 0 | — |
Clinical trials & evidence
Clinical trials
Clinical trials: 2.
Phase distribution (across all retrieved trials)
| Phase | Trials |
|---|---|
| PHASE1 | 1 |
| Not specified | 1 |
Top trials by phase / activity
| NCT | Phase | Status | Title |
|---|---|---|---|
| NCT05969977 | PHASE1 | UNKNOWN | A First-in-Human Phase 1 Study of Plasmalogen Precursor PPI-1011 in Healthy Adult Volunteers to Assess Safety, Tolerability, and Pharmacokinetics |
| NCT04031287 | Not specified | UNKNOWN | RCDP Natural History Study |
Drugs tested across these trials (top 30)
| Molecule | Max phase | Trials referencing |
|---|---|---|
| PPI-1011 | 1 | 1 |